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4 sheets sheet 1.. E GALLOOH 8v H. O. DELGROIX GLUTGH SPEOIALLY ADAPTEDFOR GABLE DRIVING (N0 Model.)

PULLBYS. Patented July 2, 1895 gw m W M an (No Model.) 4 sheets sheet 2.

0. E. CALLOOH & H. c. DELCROIX. CLUTCH SPEGIALLY ADAPTED FOR CABLEDRIVING PULLEYS.

No. 542,143. Patented July 2, 1895.

i l Q W 42? (No Model.) 4 Sheets-Sheet 3..

G. E. OALLOGH & H. O. DELGROIX.

- CLUTCH SPBOIALLY ADAPTED FOR CABLE DRIVING PULLEYS.

No. 542,143. Patented July 2, 1895.

(NoModeL) 4 1 4 SheetsSheet 4. O. B. GALLOGH 8: H. G. DELGROIX. CLUTCHSPEGIALLY "ADAPTED FOR CABLE DRIVING PULLEYS. No. 542,143.

I Patented July 2, 1895.

s .x w um w k XW f/VW 7 UNITE STATES PAT NT QFFICE CHARLES EMILE OALLOCHAND HENRI CHARLES DELCROIX, OF LA FLEcHE, FRANCE.

CLUTCH SPECIALLY ADAPTED FOR CABLE-DRIVING PULLEYS.

SPECIFICATION forming part of Letters Patent No. 542,143, dated July 2,1895.

Application filed January 8, 1895. SerialNo.534,241- (No model.)

To all whom it may concern.-

Be it known that we, CHARLES EMILE CAL- LOCH and HENRI CHARLES DELCROIX,citizens of France, and residents of La Fleche, in the Department of theSarthe, France, have nvented a new and useful Improvement in ClutchesSpecially Adapted for Cable-Driving Pulleys, of which the following is aspeci fication.

Our invention relates to an improved fast and loose pulley, and has forits object to provide improved clutch mechanism, by means of which thefast and loose pulleys are locked into operative engagement with oneanother gradually, and when so locked together are automaticallymaintained in operative engagement until disengaged by hand; and tothese ends our invention consists in the features and in the novelconstruction and arrangement of parts hereinafter fully described, andafterward definitely pointed out in the claims following thedescription, due reference being had to the accompanying drawings,formingapart of this specification, wherein- Figure l is a longitudinalcentral section of our improved device. Fig. 2 is a front elevation ofthe clutch mechanism for locking together the fast and loose pulley.Fig. 3 is an end View of the shifting mechanism for throwing the clutchmechanism into and out of operation. Fig. 4. is a front elevation, on areduced scale, of the loose pulley; and Figs. 5

- and-6 are respectively a longitudinal section and a front elevation ofa modification.

Referring to Figs. 1 t0 4 of the drawings, 1 indicates the loose pulleyand 2 the fast pulley, the pulley 2 being rigidly affixed to thedriving-shaft 3 and the pulley 1 being loosely journaled thereon, saidpulley being arranged in close juxtaposition tobut not in actual contactwith one another, as is more clearly shown in Fig. 1 of the drawings.

Arranged in fixed bearings on a bearing- .plate 8 is a feed-screw 6,provided at one end with a belt-wheel 5, about which may be passed anoperating cord or belt that extends to within convenient reach of theoperator in attendance upon the machinery designed to be driven from theshaft 3, and the other end of said screw 6 is tapped through a slidingyoke 7, adapted to be reciprocated back and forth in suitable bearingsin the plate 8. Said yoke 7 at its free end embraces the grooved end ofa hollow cone 9 loosely journaled on the shaft 3 and operates to movesaid cone back and forth upon said shaft, for the purpose hereinafterdescribed.

Pivoted in a suitable bearing formed on the hub of the fast pulley 2 isa bell-crank lever 10, the longer arm of which is adapted to be engagedby the inner wall of the hollow cone 10, while its shorter arm isprovided at its extremity with a toothed segment 10, that engages asimilar segment 10", formed on one end of a pivoted lever 10. The otherend of the leverlO is forked, as more clearly shown in Fig. 2, andengages one end of a lengthwise movable and rotary shaft 11, that at itsother end has rigidly secured thereto a friction-disk l2. Saidfriction-disk 12 is adapted to be moved into operative engagement withan annulus 13 formed on the face of the loose pulley 1, by which it isrotated, as will more fully hereinafter appear and as is best shown inFig. 1.

Rigidly mounted on the shaft 11 is a gearwheel 11 which operates todrive a gearwheel 11, and the latter in turn drives a gear-wheel 11, andmounted on the shaft of the latter gear-wheel is a toothed wheel 11,that meshes with a rack-bar 11 suitably supported in a casing 14, thatcarries said gear- Wheels and shaft 11. Secured to one end of therack-bar 11 is a chain 15, that passes about pulleys 15 journaled in theinner ends of brake-rods 16*, adapted to be moved radially inbearingscarried by the fast pulley 2, the other end of said chain beingconnected by any approved fastening to the said fast pulley.

Suitableguide-pulleys 15 are journaled to the fast pulley 2 at suitablepoints to properly guide the chain. Carried upon the outer ends of thebrake-rods 16 are segmental brake-shoes 16, that are arranged withinsuitable apertures formed in the peripheral flange of the fast pulley 2and that are adapted to be moved radially inward to engage an annularflange 17 carried by the loose pulley 1, and said brake-shoes areprevented from having an undue outward movement by lips 19, that areformed on the said peripheral flange of the fast pulley and whichoverlap the opposite ends of the brake-shoes. As shown in Figs. 1 to 4,said brake-shoes are three in number, and as thus constructed the deviceis more especially designed to be used in connection with drivingmechanism of ten horsepower and over, and the operation thereof is asfollows:

About the loose pulley 1 pass the cables which extend either directly tothe machinery to be driven, or to said machinery by intermediatemechanism, and from the shifterwheel 5 extends a belt or cord intoproximity to the machinery to be driven. It will be understood that thefast pulley 2 rotates continuously with the driven shaft 3, and let itbe assumed that the loose pulley 1 is in a state of rest. To drive thefast pulley the shifter belt or cord is operated to rotate the feedscrew6 in its hearings in the proper direction to move the yoke 7 to theright, and as the yoke 7 is thus moved it carries with it the cone 9,which engages the longer end of the bell-crank 10 and rocks the latterupon its pivot, and as the latter rocks the segment 10 meshing with thesegment 10", oscillates the lever 10 upon its pivot and shifts the shaft11 longitudinally, bringing the friction disk 12 into operativeengagement with the annu-. lus 13 on the loose pulley 1.

The pulley 1 being stationary and the friction-disk revolving with thepulley 2, said disk will be rotated as it is revolved in contact withthe annulus l3, and through the train of gearing before described willreciprocate the rack-bar 11 in the proper direction to draw upon thechain 15. As the chain 15.isthus drawn up it, acts to draw thebrake-rods 16 radially inward and thus force the brake-shoes intocontact with the annular flange 17 on theloose pulley 1. As soon as thebrake-shoes are applied, with suificient force to said annular flange toprevent them from sliding, thereon, the friction-disk 12 ceases torotate about its own axis and both the fast and loose pulleys revolve inunison.

\Vhen the driven machinery is in full operation, the feed-screw isturned back slightly to cause the yoke 7 to move a very short dis tanceaway from the end of the cone 9 and thus remove said yoke from out offrictional engagement with said cone, and the cone is then held in placeupon the shaft 3 by a coiled spring 18, carried by the cone and bearingupon said shaft with sufficient force to prevent longitudinal movementof the cone thereon.

To arrest the movement of the loose pulley the feedscrew 6 is turned soas to move the hollow cone 9 back out of engagement with the lever 10,when said lever will be immediately thrown out by centrifugal force andmove the friction-disk 12 out of engagement with the annulus 13. Therebeing now nothing to hold the train of gearing and the rackbar, thebrake-shoes are thrown out of engagement with the flange 17 bycentrifugal force, thus releasing the loose pulley, which will then cometo a state of rest. The brakeshoes, when thus released, are preventedfrom being thrown out unduly by centrifugal force by means of theoverlapping lips 19 before described, which operate to hold themparallel with the annular flange 17.

In Figs. 5 and 6 we have illustrateda modification, wherein are employedbut two brakeshoes, and which is especially designed to be used inconnection with a driving-motor of less than ten horse-power.Referringto said figures, the fast and loose pulleys, the friction-disk,the train of gearing actuated by said friction'disk, and the rack-baroperated by the said gearing for applying the brakeshoes are allconstructed and arranged in the manner before described, only the meansfor throwingin and out of action the clutch mechanism and the means forthrowing the brakeshoes being slightly modified. In said modi- Iication,instead of employing a chain for applying the brake-shoes, we pivot tothe brakerods levers 20 and 21, one of said levers, as 20, beingconnected to the rack-bar 11 by a link 23, and the corresponding end ofthe other lever 21 is likewise connected to the frame 14 by a link 2+1.The other ends of the said levers are connected together by anadjustable connecting-rod 25. In said-modification, also, we have shownmeans for shifting the disk 12 into and out of engagement with theannulus 13 different from the means before described, and which areconstructed as follows: To the fast pulley 2 is pivoted one end of alever 2b, which engages the end of the shaft 11, and at its other end isconnected to one end of a link 27, the other end of said link beingpivoted to a sleeve 28 feathered upon the driving-shaft 3. A collar 29encircles said sleeve an d is adapted to be shifted with said sleevelongitudinally upon the shaft by means of a bell-cranked shifter-lever30, pivoted at 31 to a suitable support. To set in motion the loosepulley 1 the shifting lever 30 is operated to throw the sleeve 28 towardthe pulley 2, and thus, through the medium of the link 27 and lever 26,force the friction-disk 12 into engagement with the annulus 13 on theloose pulley l. p the manner heretofore described, and through the trainof gearing shifts the rack-bar 11 in the proper direction to draw thelevers 20 and 21 toward each other and thus force the brake-shoes 16against the annular flange 17 on the loose pulley and cause the fast andloose pulleys to revolve in unison. To throw the loose pulley out ofaction it is only necessary to oscillate the shifter-lever 30 in thedirection opposite to that last described, thus withdrawing thefriction-disk 12 from out of contact with the annulus 13, when thebrakeshoes 16 will be thrown out of engagement with the flange 17 bycentrifugal force and release the loose pulley, which will then come toa state of rest.

In both types of devices above described it The disk 12 is thus rotatedin IZC is desirable that the loose pulley,when at rest, at which timethe driving-shaft is rotating therein, be supplied withlubricant toreduce the Wear and friction and insure the said pulley remainingstationary, and that the supply of said lubricant be cut off when saidpulley is rotating with said shaft. To this end we provide the followinglubricating devices, reference being had to Figs. 1 and 4,

Arranged upon the hub of the pulley 1 are a plurality oflubricating-cups 4, (six of them being shown in the drawings,) said cupsbeing arranged at uniform distances apart and communicating with theinterior of the hub. When the loose pulley is brought to a state ofrest, one of said lubricating-cups will rest in an upright positionabove the shaft 3 and will discharge lubricant down upon said shaft, andthe oil in excess, if any, passes into the corresponding lubricating-cupbelow, passing through suitable grooves provided for the purpose in thehub of the pulley. When the pulley is caused to rotate with the shaft 3,the lubricating-cups cease supplying lubricant, the oil being driven tothe upper or outer portions of the cups by centrifugal force.

Having described our invention, what we claim is the fast pulley andadapted to engagesaid annulus, a train of gearing driven by said diskand operating to force said brake-shoes against the annular flange onthe fast pulley when said disk is rotated, and means for throwing thefriction disk into engagement with the said annulus, substantially asdescribed.

2. The combination with a driving shaft and a fast and loose pulleyarranged thereon, of an annular flange carried by said loose pulley,radially movable brake-shoes adapted to engage said flange, an annuluscarried by the loose pulley, a friction disk journaled in the fastpulley and adapted to engage said annulus, a train of gearing driven bysaid disk, a reciprocating rack-bar operated by said train, connectionsbetween said rack-bar and brake-shoes, and means for throwing saidfriction disk into engagement with the annulus, substantially asdescribed.

3. The combination with a driving shaft and a fast and loose pulleyarranged thereon, of an annular flange carried by said loose pulley,radially movable brake-shoes adapted to engage said flange, an annuluscarried by the loose pulley, a'friction disk journaled in the fastpulley and adapted to engage said annulus, a train of gearing driven bysaid disk, a reciprocating rack-bar operated by said train, mechanismactuated by said rackbar for forcing the brake-shoes into engagementwith said annular flange, levers for throwing said friction disk intoand out of engagement with the said annulus, a shifting hollow cone foractuating said levers, and means for shifting said cone, substantiallyas described.

In testimony whereof we have signed this specification in the presenceof two subscribing witnesses.

CHARLES EMILE OALLOOH. HENRI CHARLES DELOROIX. Witnesses:

CLYDE SHROPSHIRE, J. 0. J ONES.

